Hello! I'm a 5-stars freelancer, very skilled in MS Office and I know what you need: a Word Merge Template.
I can do a great looking Merge Template, able to be easily merged with data from MS Excel or MS Access. You can type the data in a simple form or line, or just import from other data source (i.e. your sales software if you have one) and the document is generated with the structured data. As easy as a click!
I have made it already for invoices for my old company and it works just perfect, you can easily have your invoices merged.
Also, take a look at my portfolio!! You won't need an ugly invoice file. Instead, you want a well designed and professional looking invoice, as your customers will see it when they pay you. I can do great looking Word documents, and can easily do the same for your invoices.
Let's chat and clarify what I can offer to you!!